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Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/kaber/nf-2.6

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This commit is contained in:
David S. Miller 2009-05-27 15:51:25 -07:00
commit 4d3383d0ad
5 changed files with 33 additions and 1 deletions
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4
include/linux/netfilter/nf_conntrack_tcp.h
View File

@ -35,6 +35,9 @@ enum tcp_conntrack {
/* Has unacknowledged data */
#define IP_CT_TCP_FLAG_DATA_UNACKNOWLEDGED 0x10
/* The field td_maxack has been set */
#define IP_CT_TCP_FLAG_MAXACK_SET 0x20
struct nf_ct_tcp_flags {
__u8 flags;
__u8 mask;
@ -46,6 +49,7 @@ struct ip_ct_tcp_state {
u_int32_t td_end; /* max of seq + len */
u_int32_t td_maxend; /* max of ack + max(win, 1) */
u_int32_t td_maxwin; /* max(win) */
u_int32_t td_maxack; /* max of ack */
u_int8_t td_scale; /* window scale factor */
u_int8_t flags; /* per direction options */
};

4
net/netfilter/nf_conntrack_proto_dccp.c
View File

@ -22,6 +22,7 @@
#include <linux/netfilter/nfnetlink_conntrack.h>
#include <net/netfilter/nf_conntrack.h>
#include <net/netfilter/nf_conntrack_l4proto.h>
#include <net/netfilter/nf_conntrack_ecache.h>
#include <net/netfilter/nf_log.h>
static DEFINE_RWLOCK(dccp_lock);
@ -553,6 +554,9 @@ static int dccp_packet(struct nf_conn *ct, const struct sk_buff *skb,
ct->proto.dccp.state = new_state;
write_unlock_bh(&dccp_lock);
if (new_state != old_state)
nf_conntrack_event_cache(IPCT_PROTOINFO, ct);
dn = dccp_pernet(net);
nf_ct_refresh_acct(ct, ctinfo, skb, dn->dccp_timeout[new_state]);

18
net/netfilter/nf_conntrack_proto_tcp.c
View File

@ -634,6 +634,14 @@ static bool tcp_in_window(const struct nf_conn *ct,
sender->td_end = end;
sender->flags |= IP_CT_TCP_FLAG_DATA_UNACKNOWLEDGED;
}
if (tcph->ack) {
if (!(sender->flags & IP_CT_TCP_FLAG_MAXACK_SET)) {
sender->td_maxack = ack;
sender->flags |= IP_CT_TCP_FLAG_MAXACK_SET;
} else if (after(ack, sender->td_maxack))
sender->td_maxack = ack;
}
/*
* Update receiver data.
*/
@ -918,6 +926,16 @@ static int tcp_packet(struct nf_conn *ct,
"nf_ct_tcp: invalid state ");
return -NF_ACCEPT;
case TCP_CONNTRACK_CLOSE:
if (index == TCP_RST_SET
&& (ct->proto.tcp.seen[!dir].flags & IP_CT_TCP_FLAG_MAXACK_SET)
&& before(ntohl(th->seq), ct->proto.tcp.seen[!dir].td_maxack)) {
/* Invalid RST */
write_unlock_bh(&tcp_lock);
if (LOG_INVALID(net, IPPROTO_TCP))
nf_log_packet(pf, 0, skb, NULL, NULL, NULL,
"nf_ct_tcp: invalid RST ");
return -NF_ACCEPT;
}
if (index == TCP_RST_SET
&& ((test_bit(IPS_SEEN_REPLY_BIT, &ct->status)
&& ct->proto.tcp.last_index == TCP_SYN_SET)

6
net/netfilter/nfnetlink_log.c
View File

@ -581,6 +581,12 @@ nfulnl_log_packet(u_int8_t pf,
+ nla_total_size(sizeof(struct nfulnl_msg_packet_hw))
+ nla_total_size(sizeof(struct nfulnl_msg_packet_timestamp));
if (in && skb_mac_header_was_set(skb)) {
size += nla_total_size(skb->dev->hard_header_len)
+ nla_total_size(sizeof(u_int16_t)) /* hwtype */
+ nla_total_size(sizeof(u_int16_t)); /* hwlen */
}
spin_lock_bh(&inst->lock);
if (inst->flags & NFULNL_CFG_F_SEQ)

2
net/netfilter/xt_hashlimit.c
View File

@ -926,7 +926,7 @@ static int dl_seq_show(struct seq_file *s, void *v)
if (!hlist_empty(&htable->hash[*bucket])) {
hlist_for_each_entry(ent, pos, &htable->hash[*bucket], node)
if (dl_seq_real_show(ent, htable->family, s))
return 1;
return -1;
}
return 0;
}